Recently we held a webinar that introduced how 3DF Zephyr workflow is used to create highly representative 3D photogrammetry models and 2D ortho mosaics of the underwater world. You can watch a recording of the webinar below.
We thought it would be helpful to collate a range of FAQ’s about Underwater Photogrammetry 3DF Zephyr on one page for our customers.
FAQ’s Underwater Photogrammetry & 3DF Zephyr
It is possible to run Zephyr under Wine, including CUDA, but requires tinkering and is not officially supported.
The strong recommendation is to never use 3rd party software to correct lens distortion. Given that, let the photogrammetry software sort it out.
Correct – lens of choice for UW work is 16mm fisheye.
We do not recommend using rolling shutter with moving capture. Instead, this technique can help negate or eliminate rolling shutter distortion.
Zephyr will run, but it only supports GPU acceleration on CUDA devices. AMD cards will run but the processing will remain in CPU.
No calibration required.
Yes, coded targets are available.
Yes, but the results will only be relative to the manually orientated model and chosen Z dir for the ortho.
No, calibraton step detects this.
Good – tested with real world datasets from the English Channel.
Get close. Also, Use artificial lighting – strobes not video lights.
Yes! Additionally, our training course is approved by 3DF: https://accupixel.co.uk/courses/3df-zephyr-foundation-course/
In closing
Additionally, AccuPixel’s shop is now open for 3DFlow.
Furthermore, If you have any further questions – please do not hesitate to contact us – we would be happy to help.